Yazar "Türkay, Semiha" için listeleme
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Active suspension design based on linear-matrix inequalities and fixed-order controllers
Türkay, Semiha; Akçay, Hüseyin (2011)In this paper, influence of tire damping on multi-objective control of quarter-car suspensions excited by random road disturbances is studied. The active suspension design problem is first formulated as a mixed H 2/? ... -
Active suspension design for an idealized truck cabin
Akçay, Hüseyin; Türkay, Semiha (Institute of Electrical and Electronics Engineers Inc., 2014)In this paper, a prototype three-degree-of-freedom cabin model for a commercial truck is derived to study ride motions of the cabin under random road excitations. An active suspension system is designed using the ... -
Control Design for a High Speed Railway Vehicle via Fixed and Non-Fixed Order Optimization
Leblebici, Ash Soyic; Türkay, Semiha (IEEE, 2017)In this paper, the Root-Mean-Square (RMS) responses of the heave and pitch accelerations, the suspension travels, and the wheel deflections of a high-speed railway vehicle excited by random road inputs are studied. The ... -
Cramer-Rao Bounds for Road Profile Estimation
Akçay, Hüseyin; Türkay, Semiha (IEEE, 2017)In this paper, we study estimator accuracy in road profile identification. We derive a Cramer-Rao lower bound on the variances of all unbiased waviness parameter estimators for an ISO 8608 road profile, widely used in ... -
Effect of Multi-Objective Control on Ride Quality in High Speed Railway Vehicle
Türkay, Semiha; Leblebici, Aslı Soyic (Elsevier Science BV, 2016)The railway transportation has a significant impact on both the freight and passenger carriage, therefore it should provide a comfortable, safe, fast and inexpensive riding. In this paper, a six-degree-of-freedom half-car ... -
Effect of tire damping on the ride performance potential of active suspension systems
Türkay, Semiha; Akçay, Hüseyin (IEEE, 2007)In this paper, constraints on the transfer functions from the road disturbance to the vertical acceleration, the suspension travel, and the tire deflection are derived for a quarter-car active suspension system using the ... -
Fourier series ve altuzay-tabanlı tanıyım yöntemleri ile yol kestirimi
Türkay, Semiha (Anadolu Üniversitesi, 2003)Bu tezde, spektral çarpımıara ayırma yönteminin yol spektrumlarının kestirimi için uygulanabilirliği araştırıldı. Düzgün aralıklı olmayan spektrum ölçümleri kullanılarak çok-girdili/çok-çıktılı, doğrusal-zamandan bağımsız ... -
Frequency domain subispace-based identification of discrete-time power spectra from nonuniformly spaced measurements
Akçay, Hüseyin; Türkay, Semiha (Pergamon-Elsevier Science LTD, 2004)In this paper, we present a new subspace-based algorithm for the identification of multi-input/multi-output, square, discrete-time, linear-time invariant systems from nonuniformly spaced power spectrum measurements. The ... -
Frequency domain subspace-based identification of discrete-time power spectra from nonuniformly spaced measurements
Akçay, Hüseyin; Türkay, Semiha (IEEE, 2004)In this paper, we present a new subspace-based algorithm for the identification of multi-input/multi-output, square, discrete-time, linear-time invariant systems from nonuniformly spaced power spectrum measurements. The ... -
An H-infinity and Skyhook Controller Design for a High Speed Railway Vehicle
Leblebici, Aslı Soyic; Türkay, Semiha (Elsevier Science BV, 2018)The electronic-based recently developed railway vehicles compromising at high speeds by consuming eco-friendly energy and providing better transportation facilities without complicating the car designs. In this study, the ... -
Identification of continuous-time power spectra by generalized Fourier series
Akçay, Hüseyin; Türkay, Semiha (Chinese Automatic Control Soc, 2007)In this paper, we present a generalized Fourier series based algorithm for the identification of continuous-time, linear-time invariant systems from power spectrum measurements. The algorithm is strongly consistent and it ... -
Identification of power spectra by reweighted and regularized nuclear norm minimization
Akçay, Hüseyin; Türkay, Semiha (IEEE, 2015)In this paper, we study model order choice in subspace identification algorithms using uniformly spaced spectrum measurements. In these algorithms, model order is determined by singular-value decomposition of a structured ... -
Induction Motor Identification from Acoustic Noise Spectrum by a Covariance Subspace Algorithm
Akçay, Hüseyin; Germen, Emin; Türkay, Semiha (IEEE Computer Society, 2018)In this paper, we study identification of induction motors by using a recently developed covariance-based subspace algorithm from sound measurements. The sound data are collected by an array of five-microphones placed ... -
Influence of Tire Damping on Actively Controlled Quarter-Car Suspensions
Akçay, Hüseyin; Türkay, Semiha (Asme, 2011)In this note, a comprehensive analysis of tire damping effect on H-2-optimal, multi-objective, and robust control of quarter-car suspensions excited by random road disturbances is provided. First, H-2-optimal and convex ... -
Influence of tire damping on mixed H-2/H-infinity synthesis of half car active suspensions
Akçay, Hüseyin; Türkay, Semiha (Academic Press LTD- Elsevier Science LTD, 2009)In this paper, multi-objective control of a half-car suspension system using linear matrix inequalities is studied. It is observed that when tire damping is precisely known, road-holding quality of the suspension system ... -
Influence of tire damping on multi-objective control of quarter-car suspensions
Akçay, Hüseyin; Türkay, Semiha (2010)In this paper, multi-objective control of a quartercar suspension system subjected to random road disturbances is studied. The active suspension problem is formulated as a mixed H2/H? synthesis problem and solved using ... -
Influence of Tire Damping on the H-2 Optimally Designed Half-Car Active Suspensions
Türkay, Semiha; Akçay, Hüseyin (IEEE, 2008)In this paper, the rms responses of the heave and pitch accelerations, the suspension travels, and the tire deflections of a half-car model excited by random road inputs are studied. The road excitation at the front wheel ... -
Influence of tire damping on the H2 optimally designed half-car active suspensions
Türkay, Semiha; Akçay, Hüseyin (2008)In this paper, the rms responses of the heave and pitch accelerations, the suspension travels, and the tire deflections of a half-car model excited by random road inputs are studied. The road excitation at the front wheel ... -
Influence of tire damping on the ride performance potential of quarter-car active suspensions
Türkay, Semiha; Akçay, Hüseyin (IEEE, 2008)In this paper, performance limitations are studied for a quarter-car active suspension system excited by sinusoidal or random road disturbances. It is demonstrated that the influence of tire damping on the closed-loop ... -
Influence of Wheel-Rail Contact Stiffness on the H-2 Controlled Active Suspension Design
Leblebici, Aslı Soyic; Türkay, Semiha (Elsevier Science BV, 2017)In this work, the mathemtical model of a railway passenger car with conventional and radial-elastic wheels is analyzed. Stochastic excitations are applied to the wheelsets. The local elasticity between the wheel and the ...
